Please help I’m bad at graphs

Answer:

12

Step-by-step explanation:

2/3 of 48 is 32, 16 leftover.

1/4 of 16 is 4, 12 leftover

answer=12

The possible definitions of f(x) and g(x), considering the composition of the functions, are given as follows:

The composite function of f(x) and g(x) is given by the following rule:

(f ∘ g)(x) = f(g(x)).

It means that the output of the inside function serves as the input for the outside function.

The functions for this problem are defined as follows:

As the composition of the functions is then given as follows:

[tex]h(x) = f(g(x)) = f(8x + 6) = \sqrt{8x + 6}[/tex]

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The equation that shows how the number of square feet the painter can cover, y, depends on the number of gallons of paint available, x is y = 400x.

An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.

Given that,

A house painter knows that he can cover 400 square feet with a gallon of paint.

Let x be the number of gallons of paint.

Let y be the number of square feet the painter can cover.

Number of square feet the painter can cover with 1 gallon of paint = 400

Number of square feet the painter can cover with x gallon of paint = 400x

So y = 400x

Hence the required equation is y = 400x

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Answer:

Length = 5 cm

Width = 3 cm

Step-by-step explanation:

Part (a)

Length L = c

(i) Width W = c- 2 (width is 2 cm less than width)

(ii) Area of the rectangle = L x W
= c(c - 2) = c² - 2c

Part (b)
Area is given as 15 cm²

Therefore, c²- 2c = 15

Part (c)

The equation for area from part (b) is

c² - 2c = 15

Carry 15 to the left side by subtracting 15 from both sides:
c²- 2c - 15 = 15 - 15

c²- 2c - 15 = 0

This is a quadratic equation which can be solved easily by factoring

The factors of the constant 15 are 5 and 3
The constant is product of the factors is -15; so one of the numbers is negative

The sum of the numbers is the coefficient of c

Since this -2, the numbers are -5 and 3

Therefore the factorization of the equation

c² - 2c - 15 = (c + 3)(c - 5)

And since c² - 2c - 15 = 0 this means  (c + 3)(c - 5) = 0

So either c + 3 = 0 ==> c = -3 which can be rejected because length cannot be negative

This gives us
c - 5 = 0

Or c = 5

So length = 5 cm

Since width = c - 2

width = 5 - 2 = 3

Length = 5

Width = 3

The Mean likely to be a better measure of the center of the data set.

The mean is the average value which can be calculated by dividing the sum of observations by the number of observations

Mean = Sum of observations/the number of observations

Since Median represents the middle value of the given data when arranged in a particular order.

The measure of central tendency is the value that best describes a data set.

The measure of central tendency could be the mean, mode, and median

Recall that the best measure of central tendency is the mean

In this exercise, since the data values and the frequency of occurence, the measure of center that best describes the set of data in the table is the mean (Average).

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The value of the cubic polynomial evaluated at x = 0.5 is equal to 8.

In this problem we find the case of a cubic polynomial in standard form:

y = a · x³ + b · x² + c · x + d

Where a, b, c, d are real coefficients.

The values of the coefficients must be determined on the knowledge of the leading coefficient (a = 2), the constant term (d = 5) and two values (y(- 1) = 2, f(1) = 14). First, substitute the leading coefficient and the constant term in the definition:

y = 2 · x³ + b · x² + c · x + 5

y - 2 · x³ - 5 = b · x² + c · x

Second, form the system of linear equations by using the given values:

b - c = - 1

b + c = 7

Third, solve the resulting system by numerical methods:

(b, c) = (3, 4)

Fourth, write the resulting polynomial:

y = 2 · x³ + 3 · x² + 4 · x + 5

Fifth, evaluate the polynomial at x = 0.5:

y = 2 · 0.5³ + 3 · 0.5² + 4 · 0.5 + 5

y = 8

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Answer:

              Since you are looking for an equation to represent the pattern, the correct equation in y = mx + b form would be y = 4x - 3.

Step-by-step explanation:

              It's important to look for two things in order to write a slope-intercept form equation: the rate of change, and the beginning value.

              First thing we can start with is the rate of change, which can be found by simply selecting any two points - or in this case terms - and find the difference between term values and term number, and then divide them by each other to find the rate of change. To make things easy, we can just use terms 1 and 2. Term 1 has a term 1 value of 1 block, while term 2 has a value of 5 blocks. In order to find the rate of change, we first find the difference in term value (5 - 1 = 4 blocks), then find the difference in term numbers (2 - 1 = 1 term), and lastly divide the difference in term value by the difference in term number (4 ÷ 1 = 4 blocks per term), which is your rate of change. Note that 4 is the number of blocks each term increases by when the term number increases by 1, and not the total number of blocks in each term.

           Now that we know the rate of change, we can input it into the base equation, which will become y = 4x + b. Now we only need to find b. The simple way to solve for b would be to use a single term as reference, and plug in its term number and value into the equation and calculate b. Once again, it's easier to just use the lowest one, which would be term 1, with a term number of 1, and a term value of 1. By inserting these values, we'll get an algebraic equation to solve for b, which is 1 = 4(1) + b or 1 = 4 + b. Now, we just need a value for b that would make 4 + b equal to 1, which would be b = 1 - 4 = -3, so b would equal -3. Which means the final equation to represent this situation would be y = 4x - 3.

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The area of the given shape is  90.4  cm².

The area is the entire amount of space occupied by a flat (2-D) surface or an object's shape.

On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a shape on paper is the area that it occupies.

Given the shape of the boat, which contain, a rectangle and two right triangles,

total area = area of rectangle + area of triangle,

dimensions of the rectangle are,

length = 12 cm width = 5.2 cm

area of rectangle = l*b

area of rectangle = 12*5.2

area of rectangle = 62.4 cm²

area of triangle = 1/2*b*h

height = 8 cm

total base of both triangles = 3 + 4

base = 7 cm

area of triangle = 1/2*8*7

area of triangle = 28 cm²

total area =  62.4 cm² + 28 cm²

total area = 90.4  cm²

Hence the area is 90.4  cm².

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a)  it costs more money to make 100 photocopies

b) you can buy more than 500 photocopies for $40

What are coordinates?

A pair of numbers that use the separations between the two reference axes to define the location of a point on a coordinate plane. usually represented by the x- and y-values, respectively, (x, y).

a) In the  graph , 100 photocopies cost $10,

For 101  photocopies, the point on the line comes below of 10 on y axis

So, it costs more money to make 100 photocopies

b)  graph arrow shows line moves on...

so, you can buy more than 500 photocopies for $40

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1) Vertex -  A,B,C,O,Q,F

2) Points in the interior of ∠COB - Q,F

3) Sides of ∠2 - side OC and side OA.

What is Interior angles?

Interior angles can be generated in two methods in geometry. The first occurs within a polygon, whereas the second occurs when parallel lines are cut by a transversal. Angles are classified into many sorts based on their measurements.

1) Vertex of angles would be A,B,C,O,Q,F

2) The points in the interior of ∠COB would be, Q,F

3) The sides of ∠2 would be, side OC and side OA.

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Answer:

No it's not!

Pythagorean theorem

15² + 9² = it's not 20

15² + 9² = 17 so

NO

The statement that are true about the function and its graph is "The graph of the function is a parabola " , the correct option is (b) .

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.

here, we have,

In the question ,

it is given that ,

the quadratic function is f(x) = x² – 5x + 12 .

for x = -10 ,

f(-10) = (-10)² – 5(-10) + 12

= 100 + 50 + 12

= 162

option(a) is false .

the graph of the quadratic function is shown below .

form the graph we can see that the graph is a parabola ,

and the function opens upwards ,

the graph does not contain the points (20,-8) and (0,0)

Therefore , The statement that are true about the function and its graph is "The graph of the function is a parabola " , the correct option is (b) .

The given question is incomplete , the complete question is

Consider the quadratic function f(x) = x² – 5x + 12. Which statement is true about the function and its graph?

(a) The value of f(–10) = 82

(b) The graph of the function is a parabola.

(c) The graph of the function opens down.

(d) The graph contains the point (20, –8).

(e) The graph contains the point (0, 0).

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13/4 is the value of  [tex]4\frac{1}{2} -(2\frac{1}{2}-1 \frac{1}{4})[/tex]

A fraction represents a part of a whole.

The given expression is [tex]4\frac{1}{2} -(2\frac{1}{2}-1 \frac{1}{4})[/tex]

Convert each mixed fraction to improper fraction

9/2-(5/2-5/4)

9/2-(10-5/4)

9/2-5/4

LCM of 4 and 2 is 4

18-5/4

13/4

Hence, 13/4 is the value of  [tex]4\frac{1}{2} -(2\frac{1}{2}-1 \frac{1}{4})[/tex]

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Answer:

90.00%

Step-by-step explanation:

Answer:

90% is quarters

B) The alpha value of the reliability coefficient is one way to establish the validity of a questionnaire.

In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign.

Here,

The alpha value of the reliability coefficient, also known as Cronbach's alpha, measures the internal consistency of a questionnaire. It indicates how well the items on the questionnaire are related to each other and form a consistent measure of the concept being assessed. A high alpha value indicates that the items on the questionnaire are measuring the same underlying concept and that the questionnaire is reliable.

Correlation between the score on the questionnaire and another measure of the same concept (Option A) and consistency by which multiple subjects are able to complete the questionnaire without error (Option D) can also provide information about the reliability of a questionnaire.

The alpha value of the reliability coefficient is one way to establish the validity of a questionnaire.

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We can use trigonometry to solve this problem. Let's call the height of the ladder "h" and the distance from the wall to the base of the ladder "d".

From the problem, we know that the ladder forms a 42° angle with the ground. This means that the sine of the angle is equal to the opposite side (h) over the hypotenuse (41 inches):

sin(42°) = h/41

We can solve for h by multiplying both sides by 41 and taking the sine of 42°:

h = 41 × sin(42°)

h ≈ 28.61 inches

So the top of the ladder is about 28.61 inches from the ground.

To find the distance from the wall to the base of the ladder, we can use the cosine of the angle:

cos(42°) = d/41

We can solve for d by multiplying both sides by 41 and taking the cosine of 42°:

d = 41 × cos(42°)

d ≈ 31.15 inches

So the base of the ladder is about 31.15 inches from the wall.

After rewriting the expression [tex]4 ^ {( 2x -4)}[/tex] using distributive property, [tex]4^{2x} . 4^{-4}[/tex] is the equivalent expression.

In mathematics, it is acceptable to multiply, divide, add, or negate. The construction of an expression looks like this: Amount, a mathematical operator, and an expression A mathematical expression's variables can be numbers, amounts, or functions (such as addition, subtraction, multiplication or division etc.)

Contrasting concepts and language is typical practice. Any mathematical statement that rates systems, numbers, and then an arithmetic operation between them is referred to as an expression, sometimes known as a formula. For instance, the arithmetic operator + separates the word m from the terms 4m and 5 in the balanced formula, just as it does for the variable m in the phrase 4m + 5.

given

Expressions that are equivalent do the same thing even when they have distinct appearances.

Two quadratic expressions that are analogous have the same value when we use the same value for the variable.

[tex]4 ^ {( 2x -4)}[/tex]

[tex]4^{2x} . 4^{-4}[/tex]

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Answer:

440cm (to 3 s.f.)

Step-by-step explanation:

circumference= πd

= π×140

= 440cm (to 3 s.f.)

Answer:

x = 41

Step-by-step explanation:

Supplementary Angles rule (straight lines in total have the angle of 180):

180 - 147 = 33

Total angles in a triangle equal 180:

180 - 33 - 106 = x

x = 41

Answer:

g(x) = 2x + 2

g(x) = 3(x-3)

g(x) = 1/3x

g(x) = 5(x + 2)

g(x) = 1/3(x - 3) + 3

g(x) = -x + 4

Vertical shift of 3 units to the right.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Volume is whl.

= 1680 = (14)(12)(x)

= 1680 = 168x

= x = 10

The length is 10ft

Answer: 10 Feet

Step-by-step explanation:

Volume of pool = Length x Width x Depth = LxWxD  

We know  D = 12 feet   W = 14 feet  

So  Lx  14 x 12 = 1680      Solving for L = 10 feet

Answer: To determine whether 2.5 is a solution to the equation 4n + 4 = 14, we can substitute 2.5 for n in the equation and see if it makes the equation true.

So, if we substitute 2.5 for n in the equation:

4(2.5) + 4 = 14

Expanding the left-side expression:

10 + 4 = 14

Simplifying further:

14 = 14

Since the equation is true, we can conclude that 2.5 is a solution to the equation 4n + 4 = 14.

Step-by-step explanation:

The volume of wheat in the silo is about 1,570 feet and it would take about 63 minutes at the given rate for the silo to empty fully.

The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.

Various forms have various volumes. We have studied the several solids and forms that are specified in three dimensions, such as cubes, cuboids, cylinders, cones, etc., in 3D geometry. We will discover how to find the volume for each of these shapes.

The silo is in the shape of cone, so use the formula of volume of a cone to find volume of wheat the tank can hold.

The formula to find volume of a cone is:

V = 1/3 · πr2h -----(1)

Substitute π ≈ 3.14, r = 10 and h = 15 in (1).

V ≈ 1/3 · 3.14 · 102 · 15

V ≈ 1/3 · 3.14 · 100 · 15

V ≈ 1,570

So, the volume of wheat in the silo is about 1,570 feet.

Silo can release wheat from its bottom at the rate of 25 cubic feet per minute.

= 1,570 / 25

= 62.8

≈ 63

Hence, it would take about 63 minutes for the silo to empty fully.

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A scatterplot of miles per gallon (MPG) against weight can reveal the relationship between the two variables. If there is a trend in the graph, it can help us understand the relationship between the two variables.

For example, if the graph shows a negative correlation, meaning that as the weight of the vehicle increases, the MPG decreases, this trend may be what is expected, as heavier vehicles typically have lower fuel efficiency. On the other hand, if the graph shows no trend or a positive trend, it would indicate that weight and MPG are not significantly related, which might not be what was expected.

It is important to keep in mind that a scatterplot can only show the relationship between two variables and cannot provide a definitive explanation of the cause-and-effect relationship between them

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Complete Question: you created a scatterplot of miles per gallon against weight; check to make sure it was included in your attachment. does the graph show any trend? if yes, is the trend what you expected? why or why not?

Answer:

Could you upload the whole picture? I think I can help but I don't understand what's it's asking.

Step-by-step explanation:

..

The number of different rational numbers between [tex]$\dfrac{1}{1000}$[/tex] and 1000 that can be written either as a power of 2 or as a power of 3, where the exponent is a (possibly negative) integer, is 33.

To find all of the possible rational numbers, we need to find all the integer exponents for 2 and 3 that satisfy the conditions. [tex]2^0 = 1, 2^{-3} = 1/8, 2^{-2} = 1/4, 2^{-1} = 1/2, 2^1 = 2, 2^2 = 4, 2^3 = 8[/tex], and so on.

Similarly, for 3, we have [tex]3^0 = 1, 3^{-3} = 1/27, 3^{-2} = 1/9, 3^{-1} = 1/3, 3^1 = 3, 3^2 = 9, 3^3 = 27[/tex], and so on.

By combining the positive and negative exponents of 2 and 3, we get 33 different rational numbers that satisfy the conditions.

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The two system of linear equation with two variables has unique solution if and only if ( a₁ / a₂ ) ≠  ( b₁ / b₂ )  ≠  ( c₁ / c₂ ).

Let us consider two linear equation with two variables 'x' and 'y'.

Number of equations are same as number of variables

⇒We have two system of linear equation that is :

a₁x + b₁y + c₁ = 0

a₂x + b₂y + c₂ = 0

Condition for system of linear equation has unique solution is:

( a₁ / a₂ ) ≠  ( b₁ / b₂ )  ≠  ( c₁ / c₂ )

⇒ lines intersect at one point gives unique solution.

Therefore, the linear system of equation with two variables representing it has unique solution by ( a₁ / a₂ ) ≠  ( b₁ / b₂ )  ≠  ( c₁ / c₂ ).

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Answer:

see explanation

Step-by-step explanation:

given y varies as t , then the equation relating them is

y = kt ← k is the constant of variation

to find k use the condition y = 6 when t = 4

6 = 4k ( divide both sides by 4 )

[tex]\frac{6}{4}[/tex] = k , that is

k = [tex]\frac{3}{2}[/tex]

y = [tex]\frac{3}{2}[/tex] t ← equation of variation

(a)

when t = 6 , then

y = [tex]\frac{3}{2}[/tex] × 6 = 3 × 3 = 9

(b)

when y = 4 , then

4 = [tex]\frac{3}{2}[/tex] t ( multiply both sides by 2 to clear the fraction )

8 = 3t ( divide both sides by 3 )

[tex]\frac{8}{3}[/tex] = t

After 4 weeks the amount of coffee that Marshall will have left would be = 20 ounces.

The amount of ground coffee that Marshall bought for his office machine = 40 ounces

The quantity of coffee he uses per week in his office = 5 ounces.

Therefore for 4 weeks would be= ?

But, 1 week = 5 ounces

4 weeks = X

make X the subject of formula;

X = 5×4 = 20 ounces

The amount of ground coffee that will remain = 40-20 = 20 ounces.

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